For stakeholders across the Ready-to-cook fish product value chain to adopt novel circular economy methods, new shared knowledge infrastructures must support changes in practices. Existing literature indicates that these cannot be imposed in a generalised manner. As an alternative, we propose that Participatory Design-informed infrastructuring could provide a means of developing them with stakeholders through exploring existing practices and feasibility for adopting prototypical methods, practices and products. Using the Seafood AGE consortia as a case study, we have developed two facilitative methods using accessible digital platforms in a remote and distributed manner, for collaborating with stakeholders to map and analyse practices and responses to speculative products. This paper reports on method development. It has implications for design research academics interfacing across industries to support transition to circular economies.